or maybe its just this motor over the old one :X 
Dyno comparison between mine and a dynojet
I would think unless you're a hardcore wallet mechanic, most guys are going to value their ET, or more likely the trap MPH as a true indicator of the power the car is laying down than a dyno. There's a guy on one of the Cadillac boards telling everyone he has a 700whp turbocharged STS. Car traps 118. Fast for a FWD northstar car but when I said that didn't add up, everyone got mad at me! 
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From: Bridgewater,Ma
I would think unless you're a hardcore wallet mechanic, most guys are going to value their ET, or more likely the trap MPH as a true indicator of the power the car is laying down than a dyno. There's a guy on one of the Cadillac boards telling everyone he has a 700whp turbocharged STS. Car traps 118. Fast for a FWD northstar car but when I said that didn't add up, everyone got mad at me!
I completely agree that numbers are just numbers, they're fun to look at but in the end who gives a crap? Numbers don't equal fun.
An instrument is only as accurate as the last time it was calibrated. But even if the calibration is off, as long as it's consistent, that's all that matters.
Again, like stated already, it's useful for diagnosing issues and good for showing gains from mods done. If a h/c car puts down 420 rwhp, it might sound weak, but if the week before it put down 310 rwhp, then that's a 110 rwhp gain from h/c, which is a pretty healthy increase.
A dyno is no different to me than a scale. I really don't care what it reads, but more importantly, what it reads today compared to previous weights.
Again, like stated already, it's useful for diagnosing issues and good for showing gains from mods done. If a h/c car puts down 420 rwhp, it might sound weak, but if the week before it put down 310 rwhp, then that's a 110 rwhp gain from h/c, which is a pretty healthy increase.
A dyno is no different to me than a scale. I really don't care what it reads, but more importantly, what it reads today compared to previous weights.
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[QUOTE=The Alchemist;An instrument is only as accurate as the last time it was calibrated. But even if the calibration is off, as long as it's consistent, that's all that matters.
Again, like stated already, it's useful for diagnosing issues and good for showing gains from mods done. If a h/c car puts down 420 rwhp, it might sound weak, but if the week before it put down 310 rwhp, then that's a 110 rwhp gain from h/c, which is a pretty healthy increase.
A dyno is no different to me than a scale. I really don't care what it reads, but more importantly, what it reads today compared to previous weights.
Agree, but sometimes builders overestimate their # to the customer,such as cam and head swaps to justify the expense,when the numbers are not as expected the customer gets a little bit PO'd and the builder has to back peddle a little. Do good builders give within 3 or 5% of the gains?.
I would like to know going in whats realistic gains and B.S fantasyland #.
Its a tool for tuning, not for going rounds on it, how much money have you won dyno racing.......
Again, like stated already, it's useful for diagnosing issues and good for showing gains from mods done. If a h/c car puts down 420 rwhp, it might sound weak, but if the week before it put down 310 rwhp, then that's a 110 rwhp gain from h/c, which is a pretty healthy increase.
A dyno is no different to me than a scale. I really don't care what it reads, but more importantly, what it reads today compared to previous weights.
Agree, but sometimes builders overestimate their # to the customer,such as cam and head swaps to justify the expense,when the numbers are not as expected the customer gets a little bit PO'd and the builder has to back peddle a little. Do good builders give within 3 or 5% of the gains?.
I would like to know going in whats realistic gains and B.S fantasyland #.
Its a tool for tuning, not for going rounds on it, how much money have you won dyno racing.......
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From: Plainville,MA
Throughout the year alot of people asked what difference there was between my Mustang 1100D dyno and my old shops Dynojet 240.
Yesterday I went to Dez's to compare. Car was a customers Mild H/C 07 Z06.The car made 512hp/508tq on my dyno.At Dez's it made 528hp/519tq. So the difference was about 15hp/12-15tq across the whole power curve.
As you see my dyno is pretty close but expect alittle more power in the dyno graph going to a Dynojet.
Yesterday I went to Dez's to compare. Car was a customers Mild H/C 07 Z06.The car made 512hp/508tq on my dyno.At Dez's it made 528hp/519tq. So the difference was about 15hp/12-15tq across the whole power curve.
As you see my dyno is pretty close but expect alittle more power in the dyno graph going to a Dynojet.
I'm thinking this was Joe L's ZED6?
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Having an automatic compounded by rolling on a mustag dyno the numbers are nothing to brag about, but I can take it to the track and run 11.5's all day long in a full weight car with 17's and drive it all day if I want. The car wasn't setup for peak numbers anyways, 205 heads, a mild cam, full exhaust, and stock intake, but it works for me.
The motor has been bullet proof over the years, which also leads me to say that a safe tune is worth everything vs trying to squeeze out a few more hp.
People definitely get caught up in the numbers game ,when the only numbers that really matter are the ones on the slip, and the slip after that, and the slip after that...
The motor has been bullet proof over the years, which also leads me to say that a safe tune is worth everything vs trying to squeeze out a few more hp.
People definitely get caught up in the numbers game ,when the only numbers that really matter are the ones on the slip, and the slip after that, and the slip after that...
2004 GTO, LS1, Six speed, ProCharger, Methanol, Kooks Longtubes, 3.91 gears....
May 2007 Dez Racing
531rwhp
440rwtq
...with catted mid pipes
April 2009 Slowhawk Performance
528rwhp
484rwtq
...with catless mid pipes
May 2007 Dez Racing
531rwhp
440rwtq
...with catted mid pipes
April 2009 Slowhawk Performance
528rwhp
484rwtq
...with catless mid pipes
We saw a solid 12psi on Dez's dyno.
We saw a definite 13psi on your dyno.. if my math is correct, its about 17.5rwhp per lb of boost....
Too close to for me to tell when comparing... either way.. your dyno and dez's are almost dead nuts even! I like the load dyno better though!!!
We saw a definite 13psi on your dyno.. if my math is correct, its about 17.5rwhp per lb of boost....
Too close to for me to tell when comparing... either way.. your dyno and dez's are almost dead nuts even! I like the load dyno better though!!!